Spring-seat for vehicles



(No Model.)

W. T. BUNN & J. FAIROLOTH.

SPRING SEAT FOR VEHICLES.

No. 453,543. Patented June 2, 1891.

UNITED STATES PATENT OFFICE.

\VILLIAM THOMAS BUNN AND JAMES FAIROLOTIT, OF NEVBERN, TENNESSEE.

SPRING-SEAT FOR VEHICLES.

SPECIFICATION forming part of Letters Patent No. 453,543, dated June 2, 1891.

Application filed December 2'7, 1890.

T0 (LZZ whom it may concern:

Be it known that we, -WILLIAW THOMAS Bonn and J AMES FAIRCLOTH, citizens of the United States, residing at Newbern, in the countyof Dyerand Stateof Tennessee, have invented new and useful Improvements in Spring-Seats for Vehicles, of which the following is a specification.

Our improved seat consists of a frame of spring-coils constructed as an article of in an nfacture,wherein the wireof one of the corner-coils is extended to form a border-frame as a means for the connection at thebottom of the outer coils to brace them together at the sides and at the ends of the seat. The inner coils are connected together by the extension of the lower end of the wire of one coil to the other, and the coils are tied together at the top and at the bottom to complete the connection of the coils in the frame, so that the frame of springs may be used with a board seat or the stuffed cushion.

The accompanying drawings show our improved spring-seat, in which Figure 1 is atop View; Fig. 2, a side view, and Fig. 3 a bot-tom view.

\Ve prefer to use twin springs of conical wire coils arranged in parallel rows, the strands a connec ing their upper ends diagonally a suflicient distance apart to form the outer side rows Z) of the frame. The intermediate row or rows 0 are arranged so that their upper connecting strand at will stand about at right angles to and between the connecting strands a of the outer rows. At its apex the wire of one of the corner-coils, as at e, is extended along and around the sides and ends of the coils, so as to form a frame f, which terminates at and is connected to the coil 6, from which it started. To this frame the apex ends of the outer rows of coils are fastened, as at g, while the inner row or rows of twin springs are connected by extending the wire of one coil at its apex end to and connecting it with the apex end of its twin coil, as at h, so that the wire of the inner twin springs forms a brace at the top and at the bottom thereof. These inner twin springs are tied at their apex ends to the outer rows by ties i. At their upper ends the twin Serial No. 375,922. (No model.)

springs are connected by ties j. The inner springs may be arranged so that one coil of one twin spring will alternate with the twin coils of the adjacent spring. By this construction the strand of the twin coils is caused to form a bottom frame around all the coils, while the inner coils are braced by their strands connecting the coils at their apex ends, making a spring-seat braced at the top, at the bottom, and within its body, so as to form an article of manufacture ready for use as a Spili1g-SGth.

The conical twin coils which are shown and described, with continuous strand connecting their upper ends, have been used in the construction of spring bed-botto1ns, and such spring-coils have been connected at their upper and at their lower ends by separate and distinct metal frames surrounding them by means of tie-wires, and also byinterweaving the ends of the several coils to said frames to stiffen and to brace the coilsin rows. Such frames have been made to form a continuous border for the connected spring-rows, and have also been made of separate rods clipped to the outer coils, and it is necessary to form such frames of sizes to suit the area occupied by the group of springs.

The object of our improy ement is to construct a spring-seat frame of spiral coils with a stiffening and bracing frame formed by means of the wire strand of one of the corner-coils of the seat. This we do by making one of the twin coils at its conical end with length continued from such coil su fticient to be bent into an oblong frame with angles cor responding to the sides and corners of the seat at the bottom thereof and to be tied to the coil of which it forms a part, so that this frame is an integral part of a pairof the conical coils, and to it the lower ends of the outer coils of the two sides and one end of the seat are tied. This bracing-frame formedintegral with the wire of one of the twin coils, so far as we know and can find, is a new construction in framing a group of spring-coils for a seat, and it has the advantage of forming a frame to suit the arrangement or grouping of the springs and to brace and stiffen the group from one of its pair.

We claim as our improvement In witness whereof We have hereunto set In a spring-seat for vehicles, the colnbinztour hands in the presence of two subscribing tion, with a group of conical twin coil-springs witnesses. connected together, as described, and a stiffen- 5 ing and bracing frame formed as a eontinua- WILLIAM THOMAS BUNN.

tion of the strand of one of the corner-coils, ex- JAMES FAIROLOTH. tending around the group, connected to the conical ends of the outer rows thereof, and Witnesses: terminating at and secured to the coil from V. H. ALKER, [O which it started, as shown and described. J. W. BURNEY. 

